private void StartSignature()
{
if (this.elementContainer.SourceSigningToken == null)
{
return;
}
// determine the key identifier clause to use for the source
SecurityTokenReferenceStyle sourceSigningKeyReferenceStyle = GetTokenReferenceStyle(this.signingTokenParameters);
SecurityKeyIdentifierClause sourceSigningKeyIdentifierClause = this.signingTokenParameters.CreateKeyIdentifierClause(this.elementContainer.SourceSigningToken, sourceSigningKeyReferenceStyle);
if (sourceSigningKeyIdentifierClause == null)
{
throw TraceUtility.ThrowHelperError(new MessageSecurityException(SR.TokenManagerCannotCreateTokenReference), this.Message);
}
SecurityToken signingToken;
SecurityKeyIdentifierClause signingKeyIdentifierClause;
// determine if a token needs to be derived
if (this.signingTokenParameters.RequireDerivedKeys && !this.signingTokenParameters.HasAsymmetricKey)
{
string derivationAlgorithm = this.AlgorithmSuite.GetSignatureKeyDerivationAlgorithm(this.elementContainer.SourceSigningToken, this.StandardsManager.MessageSecurityVersion.SecureConversationVersion);
string expectedDerivationAlgorithm = SecurityUtils.GetKeyDerivationAlgorithm(this.StandardsManager.MessageSecurityVersion.SecureConversationVersion);
if (derivationAlgorithm == expectedDerivationAlgorithm)
{
DerivedKeySecurityToken derivedSigningToken = new DerivedKeySecurityToken(-1, 0, this.AlgorithmSuite.GetSignatureKeyDerivationLength(this.elementContainer.SourceSigningToken, this.StandardsManager.MessageSecurityVersion.SecureConversationVersion), null, DerivedKeySecurityToken.DefaultNonceLength, this.elementContainer.SourceSigningToken,
sourceSigningKeyIdentifierClause, derivationAlgorithm, GenerateId());
signingToken = this.elementContainer.DerivedSigningToken = derivedSigningToken;
signingKeyIdentifierClause = new LocalIdKeyIdentifierClause(signingToken.Id, signingToken.GetType());
}
else
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new NotSupportedException(SR.Format(SR.UnsupportedCryptoAlgorithm, derivationAlgorithm)));
}
}
else
{
signingToken = elementContainer.SourceSigningToken;
signingKeyIdentifierClause = sourceSigningKeyIdentifierClause;
}
SecurityKeyIdentifier signingKeyIdentifier = new SecurityKeyIdentifier(signingKeyIdentifierClause);
if (signatureConfirmationsToSend != null && signatureConfirmationsToSend.Count > 0)
{
ISecurityElement[] signatureConfirmationElements;
signatureConfirmationElements = CreateSignatureConfirmationElements(signatureConfirmationsToSend);
for (int i = 0; i < signatureConfirmationElements.Length; ++i)
{
SendSecurityHeaderElement sigConfElement = new SendSecurityHeaderElement(signatureConfirmationElements[i].Id, signatureConfirmationElements[i]);
sigConfElement.MarkedForEncryption = signatureConfirmationsToSend.IsMarkedForEncryption;
this.elementContainer.AddSignatureConfirmation(sigConfElement);
}
}
bool generateTargettablePrimarySignature = ((this.endorsingTokenParameters != null) || (this.signedEndorsingTokenParameters != null));
this.StartPrimarySignatureCore(signingToken, signingKeyIdentifier, this.signatureParts, generateTargettablePrimarySignature);
}
public override bool MatchesKeyIdentifierClause(
SecurityKeyIdentifierClause keyIdentifierClause)
{
LocalIdKeyIdentifierClause l = keyIdentifierClause
as LocalIdKeyIdentifierClause;
return(l != null && l.LocalId == Id);
}
bool MatchDirectReference(SecurityToken token, SecurityKeyIdentifierClause keyClause)
{
LocalIdKeyIdentifierClause localClause = keyClause as LocalIdKeyIdentifierClause;
if (localClause == null)
{
return(false);
}
return(token.MatchesKeyIdentifierClause(localClause));
}
protected internal override bool MatchesKeyIdentifierClause(SecurityToken token, SecurityKeyIdentifierClause keyIdentifierClause, SecurityTokenReferenceStyle referenceStyle)
{
if (referenceStyle != SecurityTokenReferenceStyle.Internal)
{
return(false);
}
LocalIdKeyIdentifierClause clause = keyIdentifierClause as LocalIdKeyIdentifierClause;
if (clause == null)
{
return(false);
}
return(clause.LocalId == token.Id);
}
bool TokenMatchesClause(SecurityToken token, SecurityKeyIdentifierClause clause)
{
if (token.MatchesKeyIdentifierClause(clause))
{
return(true);
}
if (!match_local)
{
return(false);
}
LocalIdKeyIdentifierClause l =
clause as LocalIdKeyIdentifierClause;
return(l != null && l.Matches(token.Id, token.GetType()));
}
internal static void SerializeLocalIdKeyIdentifierClause(XmlDictionaryWriter dictionaryWriter,
LocalIdKeyIdentifierClause localIdClause)
{
dictionaryWriter.WriteStartElement(XD_SecurityJan2004Dictionary_Prefix_Value,
XD_SecurityJan2004Dictionary_SecurityTokenReference,
XD_SecurityJan2004Dictionary_Namespace);
dictionaryWriter.WriteStartElement(XD_SecurityJan2004Dictionary_Prefix_Value,
XD_SecurityJan2004Dictionary_Reference,
XD_SecurityJan2004Dictionary_Namespace);
// tokenSerializer EmitBspRequiredAttributes is set to true
dictionaryWriter.WriteAttributeString(XD_SecurityJan2004Dictionary_ValueType, null, X509TokenType);
//end EmitBspRequiredAttributes
dictionaryWriter.WriteAttributeString(XD_SecurityJan2004Dictionary_URI, null, "#" + localIdClause.LocalId);
dictionaryWriter.WriteEndElement();
dictionaryWriter.WriteEndElement();
}
void WriteLocalIdKeyIdentifierClause(
XmlWriter w, LocalIdKeyIdentifierClause ic)
{
w.WriteStartElement("o", "SecurityTokenReference", Constants.WssNamespace);
w.WriteStartElement("o", "Reference", Constants.WssNamespace);
if (EmitBspRequiredAttributes && ic.OwnerType != null)
{
string vt = GetTokenTypeUri(ic.OwnerType);
if (vt != null)
{
w.WriteAttributeString("ValueType", vt);
}
}
w.WriteAttributeString("URI", "#" + ic.LocalId);
w.WriteEndElement();
w.WriteEndElement();
}
private void StartSignature()
{
if (this.elementContainer.SourceSigningToken != null)
{
SecurityToken sourceSigningToken;
SecurityKeyIdentifierClause clause2;
SecurityTokenReferenceStyle tokenReferenceStyle = this.GetTokenReferenceStyle(this.signingTokenParameters);
SecurityKeyIdentifierClause tokenToDeriveIdentifier = this.signingTokenParameters.CreateKeyIdentifierClause(this.elementContainer.SourceSigningToken, tokenReferenceStyle);
if (tokenToDeriveIdentifier == null)
{
throw TraceUtility.ThrowHelperError(new MessageSecurityException(System.ServiceModel.SR.GetString("TokenManagerCannotCreateTokenReference")), base.Message);
}
if (this.signingTokenParameters.RequireDerivedKeys && !this.signingTokenParameters.HasAsymmetricKey)
{
string signatureKeyDerivationAlgorithm = base.AlgorithmSuite.GetSignatureKeyDerivationAlgorithm(this.elementContainer.SourceSigningToken, base.StandardsManager.MessageSecurityVersion.SecureConversationVersion);
string keyDerivationAlgorithm = System.ServiceModel.Security.SecurityUtils.GetKeyDerivationAlgorithm(base.StandardsManager.MessageSecurityVersion.SecureConversationVersion);
if (signatureKeyDerivationAlgorithm != keyDerivationAlgorithm)
{
throw System.ServiceModel.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new NotSupportedException(System.ServiceModel.SR.GetString("UnsupportedCryptoAlgorithm", new object[] { signatureKeyDerivationAlgorithm })));
}
DerivedKeySecurityToken token2 = new DerivedKeySecurityToken(-1, 0, base.AlgorithmSuite.GetSignatureKeyDerivationLength(this.elementContainer.SourceSigningToken, base.StandardsManager.MessageSecurityVersion.SecureConversationVersion), null, 0x10, this.elementContainer.SourceSigningToken, tokenToDeriveIdentifier, signatureKeyDerivationAlgorithm, this.GenerateId());
sourceSigningToken = this.elementContainer.DerivedSigningToken = token2;
clause2 = new LocalIdKeyIdentifierClause(sourceSigningToken.Id, sourceSigningToken.GetType());
}
else
{
sourceSigningToken = this.elementContainer.SourceSigningToken;
clause2 = tokenToDeriveIdentifier;
}
SecurityKeyIdentifier identifier = new SecurityKeyIdentifier(new SecurityKeyIdentifierClause[] { clause2 });
if ((this.signatureConfirmationsToSend != null) && (this.signatureConfirmationsToSend.Count > 0))
{
ISecurityElement[] elementArray = this.CreateSignatureConfirmationElements(this.signatureConfirmationsToSend);
for (int i = 0; i < elementArray.Length; i++)
{
SendSecurityHeaderElement confirmation = new SendSecurityHeaderElement(elementArray[i].Id, elementArray[i])
{
MarkedForEncryption = this.signatureConfirmationsToSend.IsMarkedForEncryption
};
this.elementContainer.AddSignatureConfirmation(confirmation);
}
}
bool generateTargettablePrimarySignature = (this.endorsingTokenParameters != null) || (this.signedEndorsingTokenParameters != null);
this.StartPrimarySignatureCore(sourceSigningToken, identifier, this.signatureParts, generateTargettablePrimarySignature);
}
}
public void TryResolveToken()
{
SecurityTokenResolver r = GetResolver(true, new SecurityToken [0]);
SecurityToken token;
Assert.IsFalse(r.TryResolveToken(new LocalIdKeyIdentifierClause("foo"), out token));
UserNameSecurityToken userName =
new UserNameSecurityToken("mono", "", "urn:foo");
LocalIdKeyIdentifierClause kic =
new LocalIdKeyIdentifierClause("urn:foo");
r = GetResolver(true, new SecurityToken [] { userName });
Assert.IsTrue(r.TryResolveToken(kic, out token));
r = GetResolver(false, new SecurityToken [] { userName });
Assert.IsFalse(r.TryResolveToken(kic, out token));
}
internal protected override bool MatchesKeyIdentifierClause(SecurityToken token, SecurityKeyIdentifierClause keyIdentifierClause, SecurityTokenReferenceStyle referenceStyle)
{
if (referenceStyle == SecurityTokenReferenceStyle.Internal)
{
LocalIdKeyIdentifierClause localClause = keyIdentifierClause as LocalIdKeyIdentifierClause;
if (localClause == null)
{
return(false);
}
else
{
return(localClause.LocalId == token.Id);
}
}
else
{
return(false);
}
}
public override bool MatchesKeyIdentifierClause(SecurityKeyIdentifierClause keyIdentifierClause)
{
LocalIdKeyIdentifierClause lkic = keyIdentifierClause as LocalIdKeyIdentifierClause;
if (lkic != null && lkic.LocalId == Id)
{
return(true);
}
InternalEncryptedKeyIdentifierClause khic = keyIdentifierClause as InternalEncryptedKeyIdentifierClause;
if (keyhash == null)
{
keyhash = SHA1.Create().ComputeHash(wrapped_key);
}
if (khic != null && khic.Matches(keyhash))
{
return(true);
}
return(false);
}
public void MatchesKeyIdentifierClause()
{
UniqueId id = new UniqueId();
X509SecurityToken t = new X509SecurityToken(cert, id.ToString());
LocalIdKeyIdentifierClause l =
new LocalIdKeyIdentifierClause(id.ToString());
Assert.IsTrue(t.MatchesKeyIdentifierClause(l), "#1-1");
l = new LocalIdKeyIdentifierClause("#" + id.ToString());
Assert.IsFalse(t.MatchesKeyIdentifierClause(l), "#1-2");
X509ThumbprintKeyIdentifierClause h =
new X509ThumbprintKeyIdentifierClause(cert);
Assert.IsTrue(t.MatchesKeyIdentifierClause(h), "#2-1");
h = new X509ThumbprintKeyIdentifierClause(cert2);
Assert.IsFalse(t.MatchesKeyIdentifierClause(h), "#2-2");
X509IssuerSerialKeyIdentifierClause i =
new X509IssuerSerialKeyIdentifierClause(cert);
Assert.IsTrue(t.MatchesKeyIdentifierClause(i), "#3-1");
i = new X509IssuerSerialKeyIdentifierClause(cert2);
Assert.IsFalse(t.MatchesKeyIdentifierClause(i), "#3-2");
X509RawDataKeyIdentifierClause s =
new X509RawDataKeyIdentifierClause(cert);
Assert.IsTrue(t.MatchesKeyIdentifierClause(s), "#4-1");
s = new X509RawDataKeyIdentifierClause(cert2);
Assert.IsFalse(t.MatchesKeyIdentifierClause(s), "#4-2");
}
private void StartEncryption()
{
if (this.elementContainer.SourceEncryptionToken != null)
{
SecurityToken sourceEncryptionToken;
SecurityKeyIdentifierClause clause2;
SecurityKeyIdentifierClause clause3;
SecurityKeyIdentifier identifier;
SecurityTokenReferenceStyle tokenReferenceStyle = this.GetTokenReferenceStyle(this.encryptingTokenParameters);
bool flag = tokenReferenceStyle == SecurityTokenReferenceStyle.Internal;
SecurityKeyIdentifierClause clause = this.encryptingTokenParameters.CreateKeyIdentifierClause(this.elementContainer.SourceEncryptionToken, tokenReferenceStyle);
if (clause == null)
{
throw TraceUtility.ThrowHelperError(new MessageSecurityException(System.ServiceModel.SR.GetString("TokenManagerCannotCreateTokenReference")), base.Message);
}
if (!System.ServiceModel.Security.SecurityUtils.HasSymmetricSecurityKey(this.elementContainer.SourceEncryptionToken))
{
string str;
XmlDictionaryString str2;
int keyLength = Math.Max(0x80, base.AlgorithmSuite.DefaultSymmetricKeyLength);
System.ServiceModel.Security.CryptoHelper.ValidateSymmetricKeyLength(keyLength, base.AlgorithmSuite);
byte[] buffer = new byte[keyLength / 8];
System.ServiceModel.Security.CryptoHelper.FillRandomBytes(buffer);
base.AlgorithmSuite.GetKeyWrapAlgorithm(this.elementContainer.SourceEncryptionToken, out str, out str2);
WrappedKeySecurityToken token2 = new WrappedKeySecurityToken(this.GenerateId(), buffer, str, str2, this.elementContainer.SourceEncryptionToken, new SecurityKeyIdentifier(new SecurityKeyIdentifierClause[] { clause }));
this.elementContainer.WrappedEncryptionToken = token2;
sourceEncryptionToken = token2;
clause2 = new LocalIdKeyIdentifierClause(token2.Id, token2.GetType());
flag = true;
}
else
{
sourceEncryptionToken = this.elementContainer.SourceEncryptionToken;
clause2 = clause;
}
if (this.encryptingTokenParameters.RequireDerivedKeys)
{
string encryptionKeyDerivationAlgorithm = base.AlgorithmSuite.GetEncryptionKeyDerivationAlgorithm(sourceEncryptionToken, base.StandardsManager.MessageSecurityVersion.SecureConversationVersion);
string keyDerivationAlgorithm = System.ServiceModel.Security.SecurityUtils.GetKeyDerivationAlgorithm(base.StandardsManager.MessageSecurityVersion.SecureConversationVersion);
if (encryptionKeyDerivationAlgorithm != keyDerivationAlgorithm)
{
throw System.ServiceModel.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new NotSupportedException(System.ServiceModel.SR.GetString("UnsupportedCryptoAlgorithm", new object[] { encryptionKeyDerivationAlgorithm })));
}
DerivedKeySecurityToken token3 = new DerivedKeySecurityToken(-1, 0, base.AlgorithmSuite.GetEncryptionKeyDerivationLength(sourceEncryptionToken, base.StandardsManager.MessageSecurityVersion.SecureConversationVersion), null, 0x10, sourceEncryptionToken, clause2, encryptionKeyDerivationAlgorithm, this.GenerateId());
this.encryptingToken = this.elementContainer.DerivedEncryptionToken = token3;
clause3 = new LocalIdKeyIdentifierClause(token3.Id, token3.GetType());
}
else
{
this.encryptingToken = sourceEncryptionToken;
clause3 = clause2;
}
this.skipKeyInfoForEncryption = ((flag && base.EncryptedKeyContainsReferenceList) && (this.encryptingToken is WrappedKeySecurityToken)) && this.signThenEncrypt;
if (this.skipKeyInfoForEncryption)
{
identifier = null;
}
else
{
identifier = new SecurityKeyIdentifier(new SecurityKeyIdentifierClause[] { clause3 });
}
this.StartEncryptionCore(this.encryptingToken, identifier);
}
}
private void SignWithSupportingTokens()
{
SecurityToken[] endorsingTokens = ElementContainer.GetEndorsingSupportingTokens();
if (endorsingTokens != null)
{
for (int i = 0; i < endorsingTokens.Length; ++i)
{
SecurityToken source = endorsingTokens[i];
SecurityKeyIdentifierClause sourceKeyClause = _endorsingTokenParameters[i].CreateKeyIdentifierClause(source, GetTokenReferenceStyle(_endorsingTokenParameters[i]));
if (sourceKeyClause == null)
{
throw TraceUtility.ThrowHelperError(new MessageSecurityException(SR.Format(SR.TokenManagerCannotCreateTokenReference)), Message);
}
SecurityToken signingToken;
SecurityKeyIdentifierClause signingKeyClause;
if (_endorsingTokenParameters[i].RequireDerivedKeys && !_endorsingTokenParameters[i].HasAsymmetricKey)
{
string derivationAlgorithm = SecurityUtils.GetKeyDerivationAlgorithm(StandardsManager.MessageSecurityVersion.SecureConversationVersion);
DerivedKeySecurityToken dkt = new DerivedKeySecurityToken(-1, 0,
AlgorithmSuite.GetSignatureKeyDerivationLength(source, StandardsManager.MessageSecurityVersion.SecureConversationVersion), null,
DerivedKeySecurityToken.DefaultNonceLength, source, sourceKeyClause, derivationAlgorithm, GenerateId());
signingToken = dkt;
signingKeyClause = new LocalIdKeyIdentifierClause(dkt.Id, dkt.GetType());
ElementContainer.AddEndorsingDerivedSupportingToken(dkt);
}
else
{
signingToken = source;
signingKeyClause = sourceKeyClause;
}
SignWithSupportingToken(signingToken, signingKeyClause);
}
}
SecurityToken[] signedEndorsingSupportingTokens = ElementContainer.GetSignedEndorsingSupportingTokens();
if (signedEndorsingSupportingTokens != null)
{
for (int i = 0; i < signedEndorsingSupportingTokens.Length; ++i)
{
SecurityToken source = signedEndorsingSupportingTokens[i];
SecurityKeyIdentifierClause sourceKeyClause = _signedEndorsingTokenParameters[i].CreateKeyIdentifierClause(source, GetTokenReferenceStyle(_signedEndorsingTokenParameters[i]));
if (sourceKeyClause == null)
{
throw TraceUtility.ThrowHelperError(new MessageSecurityException(SR.Format(SR.TokenManagerCannotCreateTokenReference)), Message);
}
SecurityToken signingToken;
SecurityKeyIdentifierClause signingKeyClause;
if (_signedEndorsingTokenParameters[i].RequireDerivedKeys && !_signedEndorsingTokenParameters[i].HasAsymmetricKey)
{
string derivationAlgorithm = SecurityUtils.GetKeyDerivationAlgorithm(StandardsManager.MessageSecurityVersion.SecureConversationVersion);
DerivedKeySecurityToken dkt = new DerivedKeySecurityToken(-1, 0,
AlgorithmSuite.GetSignatureKeyDerivationLength(source, StandardsManager.MessageSecurityVersion.SecureConversationVersion), null,
DerivedKeySecurityToken.DefaultNonceLength, source, sourceKeyClause, derivationAlgorithm, GenerateId());
signingToken = dkt;
signingKeyClause = new LocalIdKeyIdentifierClause(dkt.Id, dkt.GetType());
ElementContainer.AddSignedEndorsingDerivedSupportingToken(dkt);
}
else
{
signingToken = source;
signingKeyClause = sourceKeyClause;
}
SignWithSupportingToken(signingToken, signingKeyClause);
}
}
}
private async Task <string> SerializeIdentityTokenAsync(
ClaimsIdentity identity, AuthenticationProperties properties,
OpenIdConnectMessage request, OpenIdConnectMessage response)
{
// properties.IssuedUtc and properties.ExpiresUtc
// should always be preferred when explicitly set.
if (properties.IssuedUtc == null)
{
properties.IssuedUtc = Options.SystemClock.UtcNow;
}
if (properties.ExpiresUtc == null)
{
properties.ExpiresUtc = properties.IssuedUtc + Options.IdentityTokenLifetime;
}
// Replace the identity by a new one containing only the filtered claims.
// Actors identities are also filtered (delegation scenarios).
identity = identity.Clone(claim => {
// Never exclude ClaimTypes.NameIdentifier.
if (string.Equals(claim.Type, ClaimTypes.NameIdentifier, StringComparison.OrdinalIgnoreCase))
{
return(true);
}
// Claims whose destination is not explicitly referenced or doesn't
// contain "id_token" are not included in the identity token.
return(claim.HasDestination(OpenIdConnectConstants.Destinations.IdentityToken));
});
// Create a new ticket containing the updated properties and the filtered identity.
var ticket = new AuthenticationTicket(identity, properties);
ticket.SetUsage(OpenIdConnectConstants.Usages.IdToken);
// Associate a random identifier with the identity token.
ticket.SetTicketId(Guid.NewGuid().ToString());
// By default, add the client_id to the list of the
// presenters allowed to use the identity token.
if (!string.IsNullOrEmpty(request.ClientId))
{
ticket.SetAudiences(request.ClientId);
ticket.SetPresenters(request.ClientId);
}
var notification = new SerializeIdentityTokenContext(Context, Options, request, response, ticket)
{
Issuer = Context.GetIssuer(Options),
SecurityTokenHandler = Options.IdentityTokenHandler,
SigningCredentials = Options.SigningCredentials.FirstOrDefault()
};
await Options.Provider.SerializeIdentityToken(notification);
if (!string.IsNullOrEmpty(notification.IdentityToken))
{
return(notification.IdentityToken);
}
if (notification.SecurityTokenHandler == null)
{
return(null);
}
if (!identity.HasClaim(claim => claim.Type == OpenIdConnectConstants.Claims.Subject) &&
!identity.HasClaim(claim => claim.Type == ClaimTypes.NameIdentifier))
{
throw new InvalidOperationException("A unique identifier cannot be found to generate a 'sub' claim: " +
"make sure to add a 'ClaimTypes.NameIdentifier' claim.");
}
// Store the unique subject identifier as a claim.
if (!identity.HasClaim(claim => claim.Type == OpenIdConnectConstants.Claims.Subject))
{
identity.AddClaim(OpenIdConnectConstants.Claims.Subject, identity.GetClaim(ClaimTypes.NameIdentifier));
}
// Remove the ClaimTypes.NameIdentifier claims to avoid getting duplicate claims.
// Note: the "sub" claim is automatically mapped by JwtSecurityTokenHandler
// to ClaimTypes.NameIdentifier when validating a JWT token.
// Note: make sure to call ToArray() to avoid an InvalidOperationException
// on old versions of Mono, where FindAll() is implemented using an iterator.
foreach (var claim in identity.FindAll(ClaimTypes.NameIdentifier).ToArray())
{
identity.RemoveClaim(claim);
}
// Store the "unique_id" property as a claim.
ticket.Identity.AddClaim(OpenIdConnectConstants.Claims.JwtId, ticket.GetTicketId());
// Store the "usage" property as a claim.
ticket.Identity.AddClaim(OpenIdConnectConstants.Claims.Usage, ticket.GetUsage());
// If the ticket is marked as confidential, add a new
// "confidential" claim in the security token.
if (ticket.IsConfidential())
{
ticket.Identity.AddClaim(new Claim(OpenIdConnectConstants.Claims.Confidential, "true", ClaimValueTypes.Boolean));
}
// Store the audiences as claims.
foreach (var audience in ticket.GetAudiences())
{
ticket.Identity.AddClaim(OpenIdConnectConstants.Claims.Audience, audience);
}
// If a nonce was present in the authorization request, it MUST
// be included in the id_token generated by the token endpoint.
// See http://openid.net/specs/openid-connect-core-1_0.html#IDTokenValidation
var nonce = request.Nonce;
if (request.IsAuthorizationCodeGrantType())
{
// Restore the nonce stored in the authentication
// ticket extracted from the authorization code.
nonce = ticket.GetNonce();
}
if (!string.IsNullOrEmpty(nonce))
{
ticket.Identity.AddClaim(OpenIdConnectConstants.Claims.Nonce, nonce);
}
if (!string.IsNullOrEmpty(response.Code))
{
using (var algorithm = HashAlgorithm.Create(notification.SigningCredentials.DigestAlgorithm)) {
// Create the c_hash using the authorization code returned by SerializeAuthorizationCodeAsync.
var hash = algorithm.ComputeHash(Encoding.ASCII.GetBytes(response.Code));
// Note: only the left-most half of the hash of the octets is used.
// See http://openid.net/specs/openid-connect-core-1_0.html#HybridIDToken
ticket.Identity.AddClaim(OpenIdConnectConstants.Claims.CodeHash,
Base64UrlEncoder.Encode(hash, 0, hash.Length / 2));
}
}
if (!string.IsNullOrEmpty(response.AccessToken))
{
using (var algorithm = HashAlgorithm.Create(notification.SigningCredentials.DigestAlgorithm)) {
// Create the at_hash using the access token returned by SerializeAccessTokenAsync.
var hash = algorithm.ComputeHash(Encoding.ASCII.GetBytes(response.AccessToken));
// Note: only the left-most half of the hash of the octets is used.
// See http://openid.net/specs/openid-connect-core-1_0.html#CodeIDToken
ticket.Identity.AddClaim(OpenIdConnectConstants.Claims.AccessTokenHash,
Base64UrlEncoder.Encode(hash, 0, hash.Length / 2));
}
}
// Extract the presenters from the authentication ticket.
var presenters = ticket.GetPresenters().ToArray();
switch (presenters.Length)
{
case 0: break;
case 1:
identity.AddClaim(OpenIdConnectConstants.Claims.AuthorizedParty, presenters[0]);
break;
default:
Options.Logger.LogWarning("Multiple presenters have been associated with the identity token " +
"but the JWT format only accepts single values.");
// Only add the first authorized party.
identity.AddClaim(OpenIdConnectConstants.Claims.AuthorizedParty, presenters[0]);
break;
}
var token = notification.SecurityTokenHandler.CreateToken(
subject: ticket.Identity,
issuer: notification.Issuer,
signingCredentials: notification.SigningCredentials,
notBefore: ticket.Properties.IssuedUtc.Value.UtcDateTime,
expires: ticket.Properties.ExpiresUtc.Value.UtcDateTime);
token.Payload[OpenIdConnectConstants.Claims.IssuedAt] =
EpochTime.GetIntDate(ticket.Properties.IssuedUtc.Value.UtcDateTime);
// Try to extract a key identifier from the signing credentials
// and add the "kid" property to the JWT header if applicable.
LocalIdKeyIdentifierClause clause = null;
if (notification.SigningCredentials?.SigningKeyIdentifier != null &&
notification.SigningCredentials.SigningKeyIdentifier.TryFind(out clause))
{
token.Header[JwtHeaderParameterNames.Kid] = clause.LocalId;
}
return(notification.SecurityTokenHandler.WriteToken(token));
}
private async Task <string> SerializeAccessTokenAsync(
ClaimsIdentity identity, AuthenticationProperties properties,
OpenIdConnectMessage request, OpenIdConnectMessage response)
{
// properties.IssuedUtc and properties.ExpiresUtc
// should always be preferred when explicitly set.
if (properties.IssuedUtc == null)
{
properties.IssuedUtc = Options.SystemClock.UtcNow;
}
if (properties.ExpiresUtc == null)
{
properties.ExpiresUtc = properties.IssuedUtc + Options.AccessTokenLifetime;
}
// Create a new identity containing only the filtered claims.
// Actors identities are also filtered (delegation scenarios).
identity = identity.Clone(claim => {
// Never exclude ClaimTypes.NameIdentifier.
if (string.Equals(claim.Type, ClaimTypes.NameIdentifier, StringComparison.OrdinalIgnoreCase))
{
return(true);
}
// Claims whose destination is not explicitly referenced or doesn't
// contain "access_token" are not included in the access token.
return(claim.HasDestination(OpenIdConnectConstants.Destinations.AccessToken));
});
// Create a new ticket containing the updated properties and the filtered identity.
var ticket = new AuthenticationTicket(identity, properties);
ticket.SetUsage(OpenIdConnectConstants.Usages.AccessToken);
ticket.SetAudiences(ticket.GetResources());
// Associate a random identifier with the access token.
ticket.SetTicketId(Guid.NewGuid().ToString());
// By default, add the client_id to the list of the
// presenters allowed to use the access token.
if (!string.IsNullOrEmpty(request.ClientId))
{
ticket.SetPresenters(request.ClientId);
}
var notification = new SerializeAccessTokenContext(Context, Options, request, response, ticket)
{
DataFormat = Options.AccessTokenFormat,
Issuer = Context.GetIssuer(Options),
SecurityTokenHandler = Options.AccessTokenHandler,
SigningCredentials = Options.SigningCredentials.FirstOrDefault()
};
await Options.Provider.SerializeAccessToken(notification);
if (!string.IsNullOrEmpty(notification.AccessToken))
{
return(notification.AccessToken);
}
if (notification.SecurityTokenHandler == null)
{
return(notification.DataFormat?.Protect(ticket));
}
// Store the "unique_id" property as a claim.
ticket.Identity.AddClaim(notification.SecurityTokenHandler is JwtSecurityTokenHandler ?
OpenIdConnectConstants.Claims.JwtId :
OpenIdConnectConstants.Claims.TokenId, ticket.GetTicketId());
// Store the "usage" property as a claim.
ticket.Identity.AddClaim(OpenIdConnectConstants.Claims.Usage, ticket.GetUsage());
// If the ticket is marked as confidential, add a new
// "confidential" claim in the security token.
if (ticket.IsConfidential())
{
ticket.Identity.AddClaim(new Claim(OpenIdConnectConstants.Claims.Confidential, "true", ClaimValueTypes.Boolean));
}
// Create a new claim per scope item, that will result
// in a "scope" array being added in the access token.
foreach (var scope in ticket.GetScopes())
{
ticket.Identity.AddClaim(OpenIdConnectConstants.Claims.Scope, scope);
}
var handler = notification.SecurityTokenHandler as JwtSecurityTokenHandler;
if (handler != null)
{
// Note: when used as an access token, a JWT token doesn't have to expose a "sub" claim
// but the name identifier claim is used as a substitute when it has been explicitly added.
// See https://tools.ietf.org/html/rfc7519#section-4.1.2
var subject = identity.FindFirst(OpenIdConnectConstants.Claims.Subject);
if (subject == null)
{
var identifier = identity.FindFirst(ClaimTypes.NameIdentifier);
if (identifier != null)
{
identity.AddClaim(OpenIdConnectConstants.Claims.Subject, identifier.Value);
}
}
// Remove the ClaimTypes.NameIdentifier claims to avoid getting duplicate claims.
// Note: the "sub" claim is automatically mapped by JwtSecurityTokenHandler
// to ClaimTypes.NameIdentifier when validating a JWT token.
// Note: make sure to call ToArray() to avoid an InvalidOperationException
// on old versions of Mono, where FindAll() is implemented using an iterator.
foreach (var claim in ticket.Identity.FindAll(ClaimTypes.NameIdentifier).ToArray())
{
ticket.Identity.RemoveClaim(claim);
}
// Store the audiences as claims.
foreach (var audience in ticket.GetAudiences())
{
ticket.Identity.AddClaim(OpenIdConnectConstants.Claims.Audience, audience);
}
// Extract the presenters from the authentication ticket.
var presenters = ticket.GetPresenters().ToArray();
switch (presenters.Length)
{
case 0: break;
case 1:
identity.AddClaim(OpenIdConnectConstants.Claims.AuthorizedParty, presenters[0]);
break;
default:
Options.Logger.LogWarning("Multiple presenters have been associated with the access token " +
"but the JWT format only accepts single values.");
// Only add the first authorized party.
identity.AddClaim(OpenIdConnectConstants.Claims.AuthorizedParty, presenters[0]);
break;
}
var token = handler.CreateToken(
subject: ticket.Identity,
issuer: notification.Issuer,
signingCredentials: notification.SigningCredentials,
notBefore: ticket.Properties.IssuedUtc.Value.UtcDateTime,
expires: ticket.Properties.ExpiresUtc.Value.UtcDateTime);
token.Payload[OpenIdConnectConstants.Claims.IssuedAt] =
EpochTime.GetIntDate(ticket.Properties.IssuedUtc.Value.UtcDateTime);
// Try to extract a key identifier from the signing credentials
// and add the "kid" property to the JWT header if applicable.
LocalIdKeyIdentifierClause clause = null;
if (notification.SigningCredentials?.SigningKeyIdentifier != null &&
notification.SigningCredentials.SigningKeyIdentifier.TryFind(out clause))
{
token.Header[JwtHeaderParameterNames.Kid] = clause.LocalId;
}
return(handler.WriteToken(token));
}
else
{
var descriptor = new SecurityTokenDescriptor {
Subject = ticket.Identity,
AppliesToAddress = notification.Audiences.ElementAtOrDefault(0),
TokenIssuerName = notification.Issuer,
EncryptingCredentials = notification.EncryptingCredentials,
SigningCredentials = notification.SigningCredentials,
Lifetime = new Lifetime(
notification.Ticket.Properties.IssuedUtc.Value.UtcDateTime,
notification.Ticket.Properties.ExpiresUtc.Value.UtcDateTime)
};
// When the encrypting credentials use an asymmetric key, replace them by a
// EncryptedKeyEncryptingCredentials instance to generate a symmetric key.
if (descriptor.EncryptingCredentials != null &&
descriptor.EncryptingCredentials.SecurityKey is AsymmetricSecurityKey)
{
// Note: EncryptedKeyEncryptingCredentials automatically generates an in-memory key
// that will be encrypted using the original credentials and added to the resulting token
// if the security token handler fully supports token encryption (e.g SAML or SAML2).
descriptor.EncryptingCredentials = new EncryptedKeyEncryptingCredentials(
wrappingCredentials: notification.EncryptingCredentials, keySizeInBits: 256,
encryptionAlgorithm: SecurityAlgorithms.Aes256Encryption);
}
var token = notification.SecurityTokenHandler.CreateToken(descriptor);
// Note: the security token is manually serialized to prevent
// an exception from being thrown if the handler doesn't implement
// the SecurityTokenHandler.WriteToken overload returning a string.
var builder = new StringBuilder();
using (var writer = XmlWriter.Create(builder, new XmlWriterSettings {
Encoding = new UTF8Encoding(false), OmitXmlDeclaration = true
})) {
notification.SecurityTokenHandler.WriteToken(writer, token);
}
return(builder.ToString());
}
}
private void StartEncryption()
{
if (ElementContainer.SourceEncryptionToken == null)
{
return;
}
// determine the key identifier clause to use for the source
SecurityTokenReferenceStyle sourceEncryptingKeyReferenceStyle = GetTokenReferenceStyle(_encryptingTokenParameters);
bool encryptionTokenSerialized = sourceEncryptingKeyReferenceStyle == SecurityTokenReferenceStyle.Internal;
SecurityKeyIdentifierClause sourceEncryptingKeyIdentifierClause = _encryptingTokenParameters.CreateKeyIdentifierClause(ElementContainer.SourceEncryptionToken, sourceEncryptingKeyReferenceStyle);
if (sourceEncryptingKeyIdentifierClause == null)
{
throw TraceUtility.ThrowHelperError(new MessageSecurityException(SR.TokenManagerCannotCreateTokenReference), Message);
}
SecurityToken sourceToken;
SecurityKeyIdentifierClause sourceTokenIdentifierClause;
// if the source token cannot do symmetric crypto, create a wrapped key
if (!SecurityUtils.HasSymmetricSecurityKey(ElementContainer.SourceEncryptionToken))
{
int keyLength = Math.Max(128, AlgorithmSuite.DefaultSymmetricKeyLength);
CryptoHelper.ValidateSymmetricKeyLength(keyLength, AlgorithmSuite);
byte[] key = new byte[keyLength / 8];
CryptoHelper.FillRandomBytes(key);
AlgorithmSuite.GetKeyWrapAlgorithm(ElementContainer.SourceEncryptionToken, out string keyWrapAlgorithm, out XmlDictionaryString keyWrapAlgorithmDictionaryString);
WrappedKeySecurityToken wrappedKey = new WrappedKeySecurityToken(GenerateId(), key, keyWrapAlgorithm, keyWrapAlgorithmDictionaryString,
ElementContainer.SourceEncryptionToken, new SecurityKeyIdentifier(sourceEncryptingKeyIdentifierClause));
ElementContainer.WrappedEncryptionToken = wrappedKey;
sourceToken = wrappedKey;
sourceTokenIdentifierClause = new LocalIdKeyIdentifierClause(wrappedKey.Id, wrappedKey.GetType());
encryptionTokenSerialized = true;
}
else
{
sourceToken = ElementContainer.SourceEncryptionToken;
sourceTokenIdentifierClause = sourceEncryptingKeyIdentifierClause;
}
// determine if a key needs to be derived
SecurityKeyIdentifierClause encryptingKeyIdentifierClause;
// determine if a token needs to be derived
if (_encryptingTokenParameters.RequireDerivedKeys)
{
string derivationAlgorithm = AlgorithmSuite.GetEncryptionKeyDerivationAlgorithm(sourceToken, StandardsManager.MessageSecurityVersion.SecureConversationVersion);
string expectedDerivationAlgorithm = SecurityUtils.GetKeyDerivationAlgorithm(StandardsManager.MessageSecurityVersion.SecureConversationVersion);
if (derivationAlgorithm == expectedDerivationAlgorithm)
{
DerivedKeySecurityToken derivedEncryptingToken = new DerivedKeySecurityToken(-1, 0,
AlgorithmSuite.GetEncryptionKeyDerivationLength(sourceToken, StandardsManager.MessageSecurityVersion.SecureConversationVersion), null, DerivedKeySecurityToken.DefaultNonceLength, sourceToken, sourceTokenIdentifierClause, derivationAlgorithm, GenerateId());
_encryptingToken = ElementContainer.DerivedEncryptionToken = derivedEncryptingToken;
encryptingKeyIdentifierClause = new LocalIdKeyIdentifierClause(derivedEncryptingToken.Id, derivedEncryptingToken.GetType());
}
else
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new NotSupportedException(SR.Format(SR.UnsupportedCryptoAlgorithm, derivationAlgorithm)));
}
}
else
{
_encryptingToken = sourceToken;
encryptingKeyIdentifierClause = sourceTokenIdentifierClause;
}
_skipKeyInfoForEncryption = encryptionTokenSerialized && EncryptedKeyContainsReferenceList && (_encryptingToken is WrappedKeySecurityToken) && _signThenEncrypt;
SecurityKeyIdentifier identifier;
if (_skipKeyInfoForEncryption)
{
identifier = null;
}
else
{
identifier = new SecurityKeyIdentifier(encryptingKeyIdentifierClause);
}
StartEncryptionCore(_encryptingToken, identifier);
}
SecurityKeyIdentifierClause ReadSecurityTokenReference(XmlReader reader)
{
reader.ReadStartElement();
reader.MoveToContent();
if (reader.NamespaceURI == SignedXml.XmlDsigNamespaceUrl)
{
KeyInfoX509Data x509 = new KeyInfoX509Data();
x509.LoadXml(new XmlDocument().ReadNode(reader) as XmlElement);
if (x509.IssuerSerials.Count == 0)
{
throw new XmlException("'X509IssuerSerial' element is expected inside 'X509Data' element");
}
X509IssuerSerial s = (X509IssuerSerial)x509.IssuerSerials [0];
reader.MoveToContent();
reader.ReadEndElement();
return(new X509IssuerSerialKeyIdentifierClause(s.IssuerName, s.SerialNumber));
}
if (reader.NamespaceURI != Constants.WssNamespace)
{
throw new XmlException(String.Format("Unexpected SecurityTokenReference content: expected local name 'Reference' and namespace URI '{0}' but found local name '{1}' and namespace '{2}'.", Constants.WssNamespace, reader.LocalName, reader.NamespaceURI));
}
switch (reader.LocalName)
{
case "Reference":
Type ownerType = null;
// FIXME: there could be more token types.
if (reader.MoveToAttribute("ValueType"))
{
switch (reader.Value)
{
case Constants.WSSEncryptedKeyToken:
ownerType = typeof(WrappedKeySecurityToken);
break;
case Constants.WSSX509Token:
ownerType = typeof(X509SecurityToken);
break;
case Constants.WsscContextToken:
ownerType = typeof(SecurityContextSecurityToken);
break;
default:
throw new XmlException(String.Format("Unexpected ValueType in 'Reference' element: '{0}'", reader.Value));
}
}
reader.MoveToElement();
string uri = reader.GetAttribute("URI");
if (String.IsNullOrEmpty(uri))
{
uri = "#";
}
SecurityKeyIdentifierClause ic = null;
if (ownerType == typeof(SecurityContextSecurityToken) && uri [0] != '#')
{
// FIXME: Generation?
ic = new SecurityContextKeyIdentifierClause(new UniqueId(uri));
}
else
{
ic = new LocalIdKeyIdentifierClause(uri.Substring(1), ownerType);
}
reader.Skip();
reader.MoveToContent();
reader.ReadEndElement();
return(ic);
case "KeyIdentifier":
string valueType = reader.GetAttribute("ValueType");
string value = reader.ReadElementContentAsString();
reader.MoveToContent();
reader.ReadEndElement(); // consume </Reference>
switch (valueType)
{
case Constants.WssKeyIdentifierX509Thumbptint:
return(new X509ThumbprintKeyIdentifierClause(Convert.FromBase64String(value)));
case Constants.WssKeyIdentifierEncryptedKey:
return(new InternalEncryptedKeyIdentifierClause(Convert.FromBase64String(value)));
case Constants.WssKeyIdentifierSamlAssertion:
return(new SamlAssertionKeyIdentifierClause(value));
default:
// It is kinda weird but it throws XmlException here ...
throw new XmlException(String.Format("KeyIdentifier type '{0}' is not supported in WSSecurityTokenSerializer.", valueType));
}
default:
throw new XmlException(String.Format("Unexpected SecurityTokenReference content: expected local name 'Reference' and namespace URI '{0}' but found local name '{1}' and namespace '{2}'.", Constants.WssNamespace, reader.LocalName, reader.NamespaceURI));
}
}
public Message SecureMessage()
{
secprop = Message.Properties.Security ?? new SecurityMessageProperty();
SecurityToken encToken =
secprop.InitiatorToken != null ? secprop.InitiatorToken.SecurityToken : security.EncryptionToken;
// FIXME: it might be still incorrect.
SecurityToken signToken =
Parameters == CounterParameters ? null :
security.SigningToken;
MessageProtectionOrder protectionOrder =
security.MessageProtectionOrder;
SecurityTokenSerializer serializer =
security.TokenSerializer;
SecurityBindingElement element =
security.Element;
SecurityAlgorithmSuite suite = element.DefaultAlgorithmSuite;
string messageId = "uuid-" + Guid.NewGuid();
int identForMessageId = 1;
XmlDocument doc = new XmlDocument();
doc.PreserveWhitespace = true;
// FIXME: get correct ReplyTo value
if (Direction == MessageDirection.Input)
{
msg.Headers.ReplyTo = new EndpointAddress(Constants.WsaAnonymousUri);
}
if (MessageTo != null)
{
msg.Headers.To = MessageTo.Uri;
}
// wss:Security
WSSecurityMessageHeader header =
new WSSecurityMessageHeader(serializer);
msg.Headers.Add(header);
// 1. [Timestamp]
if (element.IncludeTimestamp)
{
WsuTimestamp timestamp = new WsuTimestamp();
timestamp.Id = messageId + "-" + identForMessageId++;
timestamp.Created = DateTime.Now;
// FIXME: on service side, use element.LocalServiceSettings.TimestampValidityDuration
timestamp.Expires = timestamp.Created.Add(element.LocalClientSettings.TimestampValidityDuration);
header.AddContent(timestamp);
}
XmlNamespaceManager nsmgr = new XmlNamespaceManager(doc.NameTable);
nsmgr.AddNamespace("s", msg.Version.Envelope.Namespace);
nsmgr.AddNamespace("o", Constants.WssNamespace);
nsmgr.AddNamespace("u", Constants.WsuNamespace);
nsmgr.AddNamespace("o11", Constants.Wss11Namespace);
/*WrappedKey*/ SecurityToken primaryToken = null;
DerivedKeySecurityToken dkeyToken = null;
SecurityToken actualToken = null;
SecurityKeyIdentifierClause actualClause = null;
Signature sig = null;
List <DerivedKeySecurityToken> derivedKeys =
new List <DerivedKeySecurityToken> ();
SymmetricAlgorithm masterKey = new RijndaelManaged();
masterKey.KeySize = suite.DefaultSymmetricKeyLength;
masterKey.Mode = CipherMode.CBC;
masterKey.Padding = PaddingMode.ISO10126;
SymmetricAlgorithm actualKey = masterKey;
// 2. [Encryption Token]
// SecurityTokenInclusionMode
// - Initiator or Recipient
// - done or notyet. FIXME: not implemented yet
// It also affects on key reference output
bool includeEncToken = // /* FIXME: remove this hack */Parameters is SslSecurityTokenParameters ? false :
ShouldIncludeToken(
Security.RecipientParameters.InclusionMode, false);
bool includeSigToken = // /* FIXME: remove this hack */ Parameters is SslSecurityTokenParameters ? false :
ShouldIncludeToken(
Security.InitiatorParameters.InclusionMode, false);
SecurityKeyIdentifierClause encClause = ShouldOutputEncryptedKey ?
CounterParameters.CallCreateKeyIdentifierClause(encToken, !ShouldOutputEncryptedKey ? SecurityTokenReferenceStyle.Internal : includeEncToken ? Parameters.ReferenceStyle : SecurityTokenReferenceStyle.External) : null;
MessagePartSpecification sigSpec = SignaturePart;
MessagePartSpecification encSpec = EncryptionPart;
// encryption key (possibly also used for signing)
// FIXME: get correct SymmetricAlgorithm according to the algorithm suite
if (secprop.EncryptionKey != null)
{
actualKey.Key = secprop.EncryptionKey;
}
// FIXME: remove thid hack
if (!ShouldOutputEncryptedKey)
{
primaryToken = secprop.ProtectionToken.SecurityToken as WrappedKeySecurityToken;
}
else
{
primaryToken =
// FIXME: remove this hack?
encToken is SecurityContextSecurityToken ? encToken :
new WrappedKeySecurityToken(messageId + "-" + identForMessageId++,
actualKey.Key,
// security.DefaultKeyWrapAlgorithm,
Parameters.InternalHasAsymmetricKey ?
suite.DefaultAsymmetricKeyWrapAlgorithm :
suite.DefaultSymmetricKeyWrapAlgorithm,
encToken,
encClause != null ? new SecurityKeyIdentifier(encClause) : null);
}
// If it reuses request's encryption key, do not output.
if (ShouldOutputEncryptedKey)
{
header.AddContent(primaryToken);
}
actualToken = primaryToken;
// FIXME: I doubt it is correct...
WrappedKeySecurityToken requestEncKey = ShouldOutputEncryptedKey ? null : primaryToken as WrappedKeySecurityToken;
actualClause = requestEncKey == null ? (SecurityKeyIdentifierClause)
new LocalIdKeyIdentifierClause(actualToken.Id, typeof(WrappedKeySecurityToken)) :
new InternalEncryptedKeyIdentifierClause(SHA1.Create().ComputeHash(requestEncKey.GetWrappedKey()));
// generate derived key if needed
if (CounterParameters.RequireDerivedKeys)
{
RijndaelManaged deriv = new RijndaelManaged();
deriv.KeySize = suite.DefaultEncryptionKeyDerivationLength;
deriv.Mode = CipherMode.CBC;
deriv.Padding = PaddingMode.ISO10126;
deriv.GenerateKey();
dkeyToken = new DerivedKeySecurityToken(
GenerateId(doc),
null, // algorithm
actualClause,
new InMemorySymmetricSecurityKey(actualKey.Key),
null, // name
null, // generation
null, // offset
deriv.Key.Length,
null, // label
deriv.Key);
derivedKeys.Add(dkeyToken);
actualToken = dkeyToken;
actualKey.Key = ((SymmetricSecurityKey)dkeyToken.SecurityKeys [0]).GetSymmetricKey();
actualClause = new LocalIdKeyIdentifierClause(dkeyToken.Id);
header.AddContent(dkeyToken);
}
ReferenceList refList = new ReferenceList();
// When encrypted with DerivedKeyToken, put references
// immediately after the derived token (not inside the
// primary token).
// Similarly, when we do not output EncryptedKey,
// output ReferenceList in the same way.
if (CounterParameters.RequireDerivedKeys ||
!ShouldOutputEncryptedKey)
{
header.AddContent(refList);
}
else
{
((WrappedKeySecurityToken)primaryToken).ReferenceList = refList;
}
// [Signature Confirmation]
if (security.RequireSignatureConfirmation && secprop.ConfirmedSignatures.Count > 0)
{
foreach (string value in secprop.ConfirmedSignatures)
{
header.AddContent(new Wss11SignatureConfirmation(GenerateId(doc), value));
}
}
SupportingTokenInfoCollection tokenInfos =
Direction == MessageDirection.Input ?
security.CollectSupportingTokens(GetAction()) :
new SupportingTokenInfoCollection(); // empty
foreach (SupportingTokenInfo tinfo in tokenInfos)
{
header.AddContent(tinfo.Token);
}
// populate DOM to sign.
XPathNavigator nav = doc.CreateNavigator();
using (XmlWriter w = nav.AppendChild()) {
msg.WriteMessage(w);
}
XmlElement body = doc.SelectSingleNode("/s:Envelope/s:Body/*", nsmgr) as XmlElement;
string bodyId = null;
XmlElement secElem = null;
Collection <WSSignedXml> endorsedSignatures =
new Collection <WSSignedXml> ();
bool signatureProtection = (protectionOrder == MessageProtectionOrder.SignBeforeEncryptAndEncryptSignature);
// Below are o:Security contents that are not signed...
if (includeSigToken && signToken != null)
{
header.AddContent(signToken);
}
switch (protectionOrder)
{
case MessageProtectionOrder.EncryptBeforeSign:
// FIXME: implement
throw new NotImplementedException();
case MessageProtectionOrder.SignBeforeEncrypt:
case MessageProtectionOrder.SignBeforeEncryptAndEncryptSignature:
// sign
// see clause 8 of WS-SecurityPolicy C.2.2
WSSignedXml sxml = new WSSignedXml(doc);
SecurityTokenReferenceKeyInfo sigKeyInfo;
sig = sxml.Signature;
sig.SignedInfo.CanonicalizationMethod =
suite.DefaultCanonicalizationAlgorithm;
foreach (XmlElement elem in doc.SelectNodes("/s:Envelope/s:Header/o:Security/u:Timestamp", nsmgr))
{
CreateReference(sig, elem, elem.GetAttribute("Id", Constants.WsuNamespace));
}
foreach (XmlElement elem in doc.SelectNodes("/s:Envelope/s:Header/o:Security/o11:SignatureConfirmation", nsmgr))
{
CreateReference(sig, elem, elem.GetAttribute("Id", Constants.WsuNamespace));
}
foreach (SupportingTokenInfo tinfo in tokenInfos)
{
if (tinfo.Mode != SecurityTokenAttachmentMode.Endorsing)
{
XmlElement el = sxml.GetIdElement(doc, tinfo.Token.Id);
CreateReference(sig, el, el.GetAttribute("Id", Constants.WsuNamespace));
}
}
XmlNodeList nodes = doc.SelectNodes("/s:Envelope/s:Header/*", nsmgr);
for (int i = 0; i < msg.Headers.Count; i++)
{
MessageHeaderInfo h = msg.Headers [i];
if (h.Name == "Security" && h.Namespace == Constants.WssNamespace)
{
secElem = nodes [i] as XmlElement;
}
else if (sigSpec.HeaderTypes.Count == 0 ||
sigSpec.HeaderTypes.Contains(new XmlQualifiedName(h.Name, h.Namespace)))
{
string id = GenerateId(doc);
h.Id = id;
CreateReference(sig, nodes [i] as XmlElement, id);
}
}
if (sigSpec.IsBodyIncluded)
{
bodyId = GenerateId(doc);
CreateReference(sig, body.ParentNode as XmlElement, bodyId);
}
if (security.DefaultSignatureAlgorithm == SignedXml.XmlDsigHMACSHA1Url)
{
// FIXME: use appropriate hash algorithm
sxml.ComputeSignature(new HMACSHA1(actualKey.Key));
sigKeyInfo = new SecurityTokenReferenceKeyInfo(actualClause, serializer, doc);
}
else
{
SecurityKeyIdentifierClause signClause =
CounterParameters.CallCreateKeyIdentifierClause(signToken, includeSigToken ? CounterParameters.ReferenceStyle : SecurityTokenReferenceStyle.External);
AsymmetricSecurityKey signKey = (AsymmetricSecurityKey)signToken.ResolveKeyIdentifierClause(signClause);
sxml.SigningKey = signKey.GetAsymmetricAlgorithm(security.DefaultSignatureAlgorithm, true);
sxml.ComputeSignature();
sigKeyInfo = new SecurityTokenReferenceKeyInfo(signClause, serializer, doc);
}
sxml.KeyInfo = new KeyInfo();
sxml.KeyInfo.AddClause(sigKeyInfo);
if (!signatureProtection)
{
header.AddContent(sig);
}
// endorse the signature with (signed)endorsing
// supporting tokens.
foreach (SupportingTokenInfo tinfo in tokenInfos)
{
switch (tinfo.Mode)
{
case SecurityTokenAttachmentMode.Endorsing:
case SecurityTokenAttachmentMode.SignedEndorsing:
if (sxml.Signature.Id == null)
{
sig.Id = GenerateId(doc);
secElem.AppendChild(sxml.GetXml());
}
WSSignedXml ssxml = new WSSignedXml(doc);
ssxml.Signature.SignedInfo.CanonicalizationMethod = suite.DefaultCanonicalizationAlgorithm;
CreateReference(ssxml.Signature, doc, sig.Id);
SecurityToken sst = tinfo.Token;
SecurityKey ssk = sst.SecurityKeys [0]; // FIXME: could be different?
SecurityKeyIdentifierClause tclause = new LocalIdKeyIdentifierClause(sst.Id); // FIXME: could be different?
if (ssk is SymmetricSecurityKey)
{
SymmetricSecurityKey signKey = (SymmetricSecurityKey)ssk;
ssxml.ComputeSignature(signKey.GetKeyedHashAlgorithm(suite.DefaultSymmetricSignatureAlgorithm));
}
else
{
AsymmetricSecurityKey signKey = (AsymmetricSecurityKey)ssk;
ssxml.SigningKey = signKey.GetAsymmetricAlgorithm(suite.DefaultAsymmetricSignatureAlgorithm, true);
ssxml.ComputeSignature();
}
ssxml.KeyInfo.AddClause(new SecurityTokenReferenceKeyInfo(tclause, serializer, doc));
if (!signatureProtection)
{
header.AddContent(ssxml.Signature);
}
endorsedSignatures.Add(ssxml);
break;
}
}
// encrypt
WSEncryptedXml exml = new WSEncryptedXml(doc);
EncryptedData edata = Encrypt(body, actualKey, actualToken.Id, refList, actualClause, exml, doc);
EncryptedXml.ReplaceElement(body, edata, false);
// encrypt signature
if (signatureProtection)
{
XmlElement sigxml = sig.GetXml();
edata = Encrypt(sigxml, actualKey, actualToken.Id, refList, actualClause, exml, doc);
header.AddContent(edata);
foreach (WSSignedXml ssxml in endorsedSignatures)
{
sigxml = ssxml.GetXml();
edata = Encrypt(sigxml, actualKey, actualToken.Id, refList, actualClause, exml, doc);
header.AddContent(edata);
}
if (security.RequireSignatureConfirmation)
{
Collection <Wss11SignatureConfirmation> confs = header.FindAll <Wss11SignatureConfirmation> ();
int count = 0;
foreach (XmlElement elem in doc.SelectNodes("/s:Envelope/s:Header/o:Security/o11:SignatureConfirmation", nsmgr))
{
edata = Encrypt(elem, actualKey, confs [count].Id, refList, actualClause, exml, doc);
EncryptedXml.ReplaceElement(elem, edata, false);
header.Contents.Insert(header.Contents.IndexOf(confs [count]), edata);
header.Contents.Remove(confs [count++]);
}
}
}
// encrypt Encrypted supporting tokens
foreach (SupportingTokenInfo tinfo in tokenInfos)
{
if (tinfo.Mode == SecurityTokenAttachmentMode.SignedEncrypted)
{
XmlElement el = exml.GetIdElement(doc, tinfo.Token.Id);
tinfo.Encrypted = Encrypt(el, actualKey, actualToken.Id, refList, actualClause, exml, doc);
EncryptedXml.ReplaceElement(el, tinfo.Encrypted, false);
header.Contents.Insert(header.Contents.IndexOf(tinfo.Token), tinfo.Encrypted);
header.Contents.Remove(tinfo.Token);
}
}
break;
}
Message ret = new WSSecurityMessage(Message.CreateMessage(msg.Version, msg.Headers.Action, new XmlNodeReader(doc.SelectSingleNode("/s:Envelope/s:Body/*", nsmgr) as XmlElement)), bodyId);
ret.Properties.Security = (SecurityMessageProperty)secprop.CreateCopy();
ret.Properties.Security.EncryptionKey = masterKey.Key;
// FIXME: can we support TransportToken here?
if (element is AsymmetricSecurityBindingElement)
{
ret.Properties.Security.InitiatorToken = new SecurityTokenSpecification(encToken, null); // FIXME: second argument
ret.Properties.Security.InitiatorToken = new SecurityTokenSpecification(signToken, null); // FIXME: second argument
}
else
{
ret.Properties.Security.ProtectionToken = new SecurityTokenSpecification(primaryToken, null);
}
ret.Headers.Clear();
ret.Headers.CopyHeadersFrom(msg);
// Header contents are:
// - Timestamp
// - SignatureConfirmation if required
// - EncryptionToken if included
// - derived key token for EncryptionToken
// - ReferenceList for encrypted items
// - signed supporting tokens
// - signed endorsing supporting tokens
// (i.e. Signed/SignedEncrypted/SignedEndorsing)
// - Signature Token if different from enc token.
// - derived key token for sig token if different
// - Signature for:
// - Timestamp
// - supporting tokens (regardless of
// its inclusion)
// - message parts in SignedParts
// - SignatureToken if TokenProtection
// (regardless of its inclusion)
// - Signatures for the main signature (above),
// for every endorsing token and signed
// endorsing token.
//
//MessageBuffer zzz = ret.CreateBufferedCopy (100000);
//ret = zzz.CreateMessage ();
//Console.WriteLine (zzz.CreateMessage ());
return(ret);
}
private async Task <bool> InvokeCryptographyEndpointAsync()
{
// Metadata requests must be made via GET.
// See http://openid.net/specs/openid-connect-discovery-1_0.html#ProviderConfigurationRequest
if (!string.Equals(Request.Method, "GET", StringComparison.OrdinalIgnoreCase))
{
Logger.LogError("The discovery request was rejected because an invalid " +
"HTTP method was used: {Method}.", Request.Method);
return(await SendCryptographyResponseAsync(new OpenIdConnectResponse
{
Error = OpenIdConnectConstants.Errors.InvalidRequest,
ErrorDescription = "Invalid HTTP method: make sure to use GET."
}));
}
var request = new OpenIdConnectRequest(Request.Query);
// Note: set the message type before invoking the ExtractCryptographyRequest event.
request.SetProperty(OpenIdConnectConstants.Properties.MessageType,
OpenIdConnectConstants.MessageTypes.CryptographyRequest);
// Store the discovery request in the OWIN context.
Context.SetOpenIdConnectRequest(request);
var @event = new ExtractCryptographyRequestContext(Context, Options, request);
await Options.Provider.ExtractCryptographyRequest(@event);
if (@event.HandledResponse)
{
Logger.LogDebug("The discovery request was handled in user code.");
return(true);
}
else if (@event.Skipped)
{
Logger.LogDebug("The default discovery request handling was skipped from user code.");
return(false);
}
else if (@event.IsRejected)
{
Logger.LogError("The discovery request was rejected with the following error: {Error} ; {Description}",
/* Error: */ @event.Error ?? OpenIdConnectConstants.Errors.InvalidRequest,
/* Description: */ @event.ErrorDescription);
return(await SendCryptographyResponseAsync(new OpenIdConnectResponse
{
Error = @event.Error ?? OpenIdConnectConstants.Errors.InvalidRequest,
ErrorDescription = @event.ErrorDescription,
ErrorUri = @event.ErrorUri
}));
}
Logger.LogInformation("The discovery request was successfully extracted " +
"from the HTTP request: {Request}", request);
var context = new ValidateCryptographyRequestContext(Context, Options, request);
await Options.Provider.ValidateCryptographyRequest(context);
if (context.HandledResponse)
{
Logger.LogDebug("The discovery request was handled in user code.");
return(true);
}
else if (context.Skipped)
{
Logger.LogDebug("The default discovery request handling was skipped from user code.");
return(false);
}
else if (!context.IsValidated)
{
Logger.LogError("The discovery request was rejected with the following error: {Error} ; {Description}",
/* Error: */ context.Error ?? OpenIdConnectConstants.Errors.InvalidRequest,
/* Description: */ context.ErrorDescription);
return(await SendCryptographyResponseAsync(new OpenIdConnectResponse
{
Error = context.Error ?? OpenIdConnectConstants.Errors.InvalidRequest,
ErrorDescription = context.ErrorDescription,
ErrorUri = context.ErrorUri
}));
}
var notification = new HandleCryptographyRequestContext(Context, Options, request);
foreach (var credentials in Options.SigningCredentials)
{
// If the signing key is not an asymmetric key, ignore it.
if (!(credentials.SigningKey is AsymmetricSecurityKey))
{
continue;
}
if (!credentials.SigningKey.IsSupportedAlgorithm(SecurityAlgorithms.RsaSha256Signature))
{
Logger.LogInformation("An unsupported signing key was ignored and excluded from the " +
"key set: {Type}. Only RSA asymmetric security keys can be exposed " +
"via the JWKS endpoint.", credentials.SigningKey.GetType().Name);
continue;
}
// Try to extract a key identifier from the credentials.
LocalIdKeyIdentifierClause identifier = null;
credentials.SigningKeyIdentifier?.TryFind(out identifier);
// Resolve the underlying algorithm from the security key.
var algorithm = ((AsymmetricSecurityKey)credentials.SigningKey)
.GetAsymmetricAlgorithm(
algorithm: SecurityAlgorithms.RsaSha256Signature,
privateKey: false) as RSA;
// Skip the key if an algorithm instance cannot be extracted.
if (algorithm == null)
{
Logger.LogWarning("A signing key was ignored because it was unable " +
"to provide the requested algorithm instance.");
continue;
}
// Export the RSA public key to create a new JSON Web Key
// exposing the exponent and the modulus parameters.
var parameters = algorithm.ExportParameters(includePrivateParameters: false);
Debug.Assert(parameters.Exponent != null &&
parameters.Modulus != null,
"RSA.ExportParameters() shouldn't return null parameters.");
var key = new JsonWebKey
{
Use = JsonWebKeyUseNames.Sig,
Kty = JsonWebAlgorithmsKeyTypes.RSA,
// Resolve the JWA identifier from the algorithm specified in the credentials.
Alg = OpenIdConnectServerHelpers.GetJwtAlgorithm(credentials.SignatureAlgorithm),
// Use the key identifier specified
// in the signing credentials.
Kid = identifier?.LocalId,
// Note: both E and N must be base64url-encoded.
// See https://tools.ietf.org/html/rfc7518#section-6.2.1.2
E = Base64UrlEncoder.Encode(parameters.Exponent),
N = Base64UrlEncoder.Encode(parameters.Modulus)
};
X509Certificate2 certificate = null;
// Determine whether the signing credentials are directly based on a X.509 certificate.
var x509SigningCredentials = credentials as X509SigningCredentials;
if (x509SigningCredentials != null)
{
certificate = x509SigningCredentials.Certificate;
}
// Skip looking for a X509SecurityKey in SigningCredentials.SigningKey
// if a certificate has been found in the SigningCredentials instance.
if (certificate == null)
{
// Determine whether the security key is an asymmetric key embedded in a X.509 certificate.
var x509SecurityKey = credentials.SigningKey as X509SecurityKey;
if (x509SecurityKey != null)
{
certificate = x509SecurityKey.Certificate;
}
}
// Skip looking for a X509AsymmetricSecurityKey in SigningCredentials.SigningKey
// if a certificate has been found in SigningCredentials or SigningCredentials.SigningKey.
if (certificate == null)
{
// Determine whether the security key is an asymmetric key embedded in a X.509 certificate.
var x509AsymmetricSecurityKey = credentials.SigningKey as X509AsymmetricSecurityKey;
if (x509AsymmetricSecurityKey != null)
{
// The X.509 certificate is not directly accessible when using X509AsymmetricSecurityKey.
// Reflection is the only way to get the certificate used to create the security key.
var field = typeof(X509AsymmetricSecurityKey).GetField(
name: "certificate",
bindingAttr: BindingFlags.Instance | BindingFlags.NonPublic);
Debug.Assert(field != null);
certificate = (X509Certificate2)field.GetValue(x509AsymmetricSecurityKey);
}
}
// If the signing key is embedded in a X.509 certificate, set
// the x5t and x5c parameters using the certificate details.
if (certificate != null)
{
// x5t must be base64url-encoded.
// See https://tools.ietf.org/html/rfc7517#section-4.8
key.X5t = Base64UrlEncoder.Encode(certificate.GetCertHash());
// Unlike E or N, the certificates contained in x5c
// must be base64-encoded and not base64url-encoded.
// See https://tools.ietf.org/html/rfc7517#section-4.7
key.X5c.Add(Convert.ToBase64String(certificate.RawData));
}
notification.Keys.Add(key);
}
await Options.Provider.HandleCryptographyRequest(notification);
if (notification.HandledResponse)
{
Logger.LogDebug("The discovery request was handled in user code.");
return(true);
}
else if (notification.Skipped)
{
Logger.LogDebug("The default discovery request handling was skipped from user code.");
return(false);
}
else if (notification.IsRejected)
{
Logger.LogError("The discovery request was rejected with the following error: {Error} ; {Description}",
/* Error: */ notification.Error ?? OpenIdConnectConstants.Errors.InvalidRequest,
/* Description: */ notification.ErrorDescription);
return(await SendCryptographyResponseAsync(new OpenIdConnectResponse
{
Error = notification.Error ?? OpenIdConnectConstants.Errors.InvalidRequest,
ErrorDescription = notification.ErrorDescription,
ErrorUri = notification.ErrorUri
}));
}
var keys = new JArray();
foreach (var key in notification.Keys)
{
var item = new JObject();
// Ensure a key type has been provided.
// See https://tools.ietf.org/html/rfc7517#section-4.1
if (string.IsNullOrEmpty(key.Kty))
{
Logger.LogError("A JSON Web Key was excluded from the key set because " +
"it didn't contain the mandatory 'kid' parameter.");
continue;
}
// Create a dictionary associating the
// JsonWebKey components with their values.
var parameters = new Dictionary <string, string>
{
[JsonWebKeyParameterNames.Kid] = key.Kid,
[JsonWebKeyParameterNames.Use] = key.Use,
[JsonWebKeyParameterNames.Kty] = key.Kty,
[JsonWebKeyParameterNames.KeyOps] = key.KeyOps,
[JsonWebKeyParameterNames.Alg] = key.Alg,
[JsonWebKeyParameterNames.E] = key.E,
[JsonWebKeyParameterNames.N] = key.N,
[JsonWebKeyParameterNames.X5t] = key.X5t,
[JsonWebKeyParameterNames.X5u] = key.X5u
};
foreach (var parameter in parameters)
{
if (!string.IsNullOrEmpty(parameter.Value))
{
item.Add(parameter.Key, parameter.Value);
}
}
if (key.X5c.Count != 0)
{
item.Add(JsonWebKeyParameterNames.X5c, new JArray(key.X5c));
}
keys.Add(item);
}
return(await SendCryptographyResponseAsync(new OpenIdConnectResponse
{
[OpenIdConnectConstants.Parameters.Keys] = keys
}));
}
public Message SecureMessage()
{
secprop = Message.Properties.Security ?? new SecurityMessageProperty();
SecurityToken encToken =
secprop.InitiatorToken != null ? secprop.InitiatorToken.SecurityToken : security.EncryptionToken;
// FIXME: it might be still incorrect.
SecurityToken signToken =
Parameters == CounterParameters ? null :
security.SigningToken;
MessageProtectionOrder protectionOrder =
security.MessageProtectionOrder;
SecurityBindingElement element =
security.Element;
SecurityAlgorithmSuite suite = element.DefaultAlgorithmSuite;
string messageId = "uuid-" + Guid.NewGuid();
int identForMessageId = 1;
XmlDocument doc = new XmlDocument();
doc.PreserveWhitespace = true;
var action = msg.Headers.Action;
if (msg.Version.Addressing != AddressingVersion.None)
{
AddAddressingToHeader(msg.Headers);
}
// wss:Security
WSSecurityMessageHeader header =
new WSSecurityMessageHeader(security.TokenSerializer);
msg.Headers.Add(header);
// 1. [Timestamp]
if (element.IncludeTimestamp)
{
AddTimestampToHeader(header, messageId + "-" + identForMessageId++);
}
XmlNamespaceManager nsmgr = new XmlNamespaceManager(doc.NameTable);
nsmgr.AddNamespace("s", msg.Version.Envelope.Namespace);
nsmgr.AddNamespace("o", Constants.WssNamespace);
nsmgr.AddNamespace("u", Constants.WsuNamespace);
nsmgr.AddNamespace("o11", Constants.Wss11Namespace);
/*WrappedKey*/ SecurityToken primaryToken = null;
SecurityToken actualToken = null;
SecurityKeyIdentifierClause actualClause = null;
SymmetricAlgorithm masterKey = new RijndaelManaged();
masterKey.KeySize = suite.DefaultSymmetricKeyLength;
masterKey.Mode = CipherMode.CBC;
masterKey.Padding = PaddingMode.ISO10126;
SymmetricAlgorithm actualKey = masterKey;
// 2. [Encryption Token]
// SecurityTokenInclusionMode
// - Initiator or Recipient
// - done or notyet. FIXME: not implemented yet
// It also affects on key reference output
bool includeEncToken = // /* FIXME: remove this hack */Parameters is SslSecurityTokenParameters ? false :
ShouldIncludeToken(
Security.RecipientParameters.InclusionMode, false);
bool includeSigToken = // /* FIXME: remove this hack */ Parameters is SslSecurityTokenParameters ? false :
ShouldIncludeToken(
Security.InitiatorParameters.InclusionMode, false);
SecurityKeyIdentifierClause encClause = ShouldOutputEncryptedKey ?
CounterParameters.CallCreateKeyIdentifierClause(encToken, !ShouldOutputEncryptedKey ? SecurityTokenReferenceStyle.Internal : includeEncToken ? Parameters.ReferenceStyle : SecurityTokenReferenceStyle.External) : null;
MessagePartSpecification encSpec = EncryptionPart;
// encryption key (possibly also used for signing)
// FIXME: get correct SymmetricAlgorithm according to the algorithm suite
if (secprop.EncryptionKey != null)
{
actualKey.Key = secprop.EncryptionKey;
}
// FIXME: remove thid hack
if (!ShouldOutputEncryptedKey)
{
primaryToken = secprop.ProtectionToken.SecurityToken as WrappedKeySecurityToken;
}
else
{
primaryToken =
// FIXME: remove this hack?
encToken is SecurityContextSecurityToken ? encToken :
new WrappedKeySecurityToken(messageId + "-" + identForMessageId++,
actualKey.Key,
// security.DefaultKeyWrapAlgorithm,
Parameters.InternalHasAsymmetricKey ?
suite.DefaultAsymmetricKeyWrapAlgorithm :
suite.DefaultSymmetricKeyWrapAlgorithm,
encToken,
encClause != null ? new SecurityKeyIdentifier(encClause) : null);
}
// If it reuses request's encryption key, do not output.
if (ShouldOutputEncryptedKey)
{
header.AddContent(primaryToken);
}
actualToken = primaryToken;
// FIXME: I doubt it is correct...
WrappedKeySecurityToken requestEncKey = ShouldOutputEncryptedKey ? null : primaryToken as WrappedKeySecurityToken;
actualClause = requestEncKey == null ? (SecurityKeyIdentifierClause)
new LocalIdKeyIdentifierClause(actualToken.Id, typeof(WrappedKeySecurityToken)) :
new InternalEncryptedKeyIdentifierClause(SHA1.Create().ComputeHash(requestEncKey.GetWrappedKey()));
// generate derived key if needed
if (CounterParameters.RequireDerivedKeys)
{
var dkeyToken = CreateDerivedKey(GenerateId(doc), actualClause, actualKey);
actualToken = dkeyToken;
actualKey.Key = ((SymmetricSecurityKey)dkeyToken.SecurityKeys [0]).GetSymmetricKey();
actualClause = new LocalIdKeyIdentifierClause(dkeyToken.Id);
header.AddContent(dkeyToken);
}
ReferenceList refList = new ReferenceList();
// When encrypted with DerivedKeyToken, put references
// immediately after the derived token (not inside the
// primary token).
// Similarly, when we do not output EncryptedKey,
// output ReferenceList in the same way.
if (CounterParameters.RequireDerivedKeys ||
!ShouldOutputEncryptedKey)
{
header.AddContent(refList);
}
else
{
((WrappedKeySecurityToken)primaryToken).ReferenceList = refList;
}
// [Signature Confirmation]
if (security.RequireSignatureConfirmation && secprop.ConfirmedSignatures.Count > 0)
{
foreach (string value in secprop.ConfirmedSignatures)
{
header.AddContent(new Wss11SignatureConfirmation(GenerateId(doc), value));
}
}
SupportingTokenInfoCollection tokenInfos =
Direction == MessageDirection.Input ?
security.CollectSupportingTokens(GetAction()) :
new SupportingTokenInfoCollection(); // empty
foreach (SupportingTokenInfo tinfo in tokenInfos)
{
header.AddContent(tinfo.Token);
}
// populate DOM to sign.
XPathNavigator nav = doc.CreateNavigator();
using (XmlWriter w = nav.AppendChild()) {
msg.WriteMessage(w);
}
XmlElement body = doc.SelectSingleNode("/s:Envelope/s:Body/*", nsmgr) as XmlElement;
string bodyId = null;
Collection <WSSignedXml> endorsedSignatures =
new Collection <WSSignedXml> ();
bool signatureProtection = (protectionOrder == MessageProtectionOrder.SignBeforeEncryptAndEncryptSignature);
// Below are o:Security contents that are not signed...
if (includeSigToken && signToken != null)
{
header.AddContent(signToken);
}
switch (protectionOrder)
{
case MessageProtectionOrder.EncryptBeforeSign:
// FIXME: implement
throw new NotImplementedException();
case MessageProtectionOrder.SignBeforeEncrypt:
case MessageProtectionOrder.SignBeforeEncryptAndEncryptSignature:
var sig = CreateSignature(doc, body, nsmgr, tokenInfos,
actualClause, actualKey, signToken, includeSigToken,
signatureProtection, header, endorsedSignatures,
ref bodyId);
// encrypt
WSEncryptedXml exml = new WSEncryptedXml(doc);
EncryptedData edata = Encrypt(body, actualKey, actualToken.Id, refList, actualClause, exml, doc, EncryptedXml.XmlEncElementContentUrl);
EncryptedXml.ReplaceElement(body, edata, false);
// encrypt signature
if (signatureProtection)
{
XmlElement sigxml = sig.GetXml();
edata = Encrypt(sigxml, actualKey, actualToken.Id, refList, actualClause, exml, doc, EncryptedXml.XmlEncElementUrl);
header.AddContent(edata);
foreach (WSSignedXml ssxml in endorsedSignatures)
{
sigxml = ssxml.GetXml();
edata = Encrypt(sigxml, actualKey, actualToken.Id, refList, actualClause, exml, doc, EncryptedXml.XmlEncElementUrl);
header.AddContent(edata);
}
if (security.RequireSignatureConfirmation)
{
Collection <Wss11SignatureConfirmation> confs = header.FindAll <Wss11SignatureConfirmation> ();
int count = 0;
foreach (XmlElement elem in doc.SelectNodes("/s:Envelope/s:Header/o:Security/o11:SignatureConfirmation", nsmgr))
{
edata = Encrypt(elem, actualKey, confs [count].Id, refList, actualClause, exml, doc, EncryptedXml.XmlEncElementUrl);
EncryptedXml.ReplaceElement(elem, edata, false);
header.Contents.Insert(header.Contents.IndexOf(confs [count]), edata);
header.Contents.Remove(confs [count++]);
}
}
}
// encrypt Encrypted supporting tokens
foreach (SupportingTokenInfo tinfo in tokenInfos)
{
if (tinfo.Mode == SecurityTokenAttachmentMode.SignedEncrypted)
{
XmlElement el = exml.GetIdElement(doc, tinfo.Token.Id);
tinfo.Encrypted = Encrypt(el, actualKey, actualToken.Id, refList, actualClause, exml, doc, EncryptedXml.XmlEncElementUrl);
EncryptedXml.ReplaceElement(el, tinfo.Encrypted, false);
header.Contents.Insert(header.Contents.IndexOf(tinfo.Token), tinfo.Encrypted);
header.Contents.Remove(tinfo.Token);
}
}
break;
}
Message ret = new WSSecurityMessage(Message.CreateMessage(msg.Version, action, new XmlNodeReader(doc.SelectSingleNode("/s:Envelope/s:Body/*", nsmgr) as XmlElement)), bodyId);
ret.Properties.Security = (SecurityMessageProperty)secprop.CreateCopy();
ret.Properties.Security.EncryptionKey = masterKey.Key;
// FIXME: can we support TransportToken here?
if (element is AsymmetricSecurityBindingElement)
{
ret.Properties.Security.InitiatorToken = new SecurityTokenSpecification(encToken, null); // FIXME: second argument
ret.Properties.Security.InitiatorToken = new SecurityTokenSpecification(signToken, null); // FIXME: second argument
}
else
{
ret.Properties.Security.ProtectionToken = new SecurityTokenSpecification(primaryToken, null);
}
ret.Headers.Clear();
ret.Headers.CopyHeadersFrom(msg);
// Header contents are:
// - Timestamp
// - SignatureConfirmation if required
// - EncryptionToken if included
// - derived key token for EncryptionToken
// - ReferenceList for encrypted items
// - signed supporting tokens
// - signed endorsing supporting tokens
// (i.e. Signed/SignedEncrypted/SignedEndorsing)
// - Signature Token if different from enc token.
// - derived key token for sig token if different
// - Signature for:
// - Timestamp
// - supporting tokens (regardless of
// its inclusion)
// - message parts in SignedParts
// - SignatureToken if TokenProtection
// (regardless of its inclusion)
// - Signatures for the main signature (above),
// for every endorsing token and signed
// endorsing token.
//
//MessageBuffer zzz = ret.CreateBufferedCopy (100000);
//ret = zzz.CreateMessage ();
//Console.WriteLine (zzz.CreateMessage ());
return(ret);
}
private void SignWithSupportingTokens()
{
SecurityToken[] endorsingSupportingTokens = this.elementContainer.GetEndorsingSupportingTokens();
if (endorsingSupportingTokens != null)
{
for (int i = 0; i < endorsingSupportingTokens.Length; i++)
{
SecurityToken token2;
SecurityKeyIdentifierClause clause2;
SecurityToken token = endorsingSupportingTokens[i];
SecurityKeyIdentifierClause tokenToDeriveIdentifier = this.endorsingTokenParameters[i].CreateKeyIdentifierClause(token, this.GetTokenReferenceStyle(this.endorsingTokenParameters[i]));
if (tokenToDeriveIdentifier == null)
{
throw TraceUtility.ThrowHelperError(new MessageSecurityException(System.ServiceModel.SR.GetString("TokenManagerCannotCreateTokenReference")), base.Message);
}
if (this.endorsingTokenParameters[i].RequireDerivedKeys && !this.endorsingTokenParameters[i].HasAsymmetricKey)
{
string keyDerivationAlgorithm = System.ServiceModel.Security.SecurityUtils.GetKeyDerivationAlgorithm(base.StandardsManager.MessageSecurityVersion.SecureConversationVersion);
DerivedKeySecurityToken token3 = new DerivedKeySecurityToken(-1, 0, base.AlgorithmSuite.GetSignatureKeyDerivationLength(token, base.StandardsManager.MessageSecurityVersion.SecureConversationVersion), null, 0x10, token, tokenToDeriveIdentifier, keyDerivationAlgorithm, this.GenerateId());
token2 = token3;
clause2 = new LocalIdKeyIdentifierClause(token3.Id, token3.GetType());
this.elementContainer.AddEndorsingDerivedSupportingToken(token3);
}
else
{
token2 = token;
clause2 = tokenToDeriveIdentifier;
}
this.SignWithSupportingToken(token2, clause2);
}
}
SecurityToken[] signedEndorsingSupportingTokens = this.elementContainer.GetSignedEndorsingSupportingTokens();
if (signedEndorsingSupportingTokens != null)
{
for (int j = 0; j < signedEndorsingSupportingTokens.Length; j++)
{
SecurityToken token5;
SecurityKeyIdentifierClause clause4;
SecurityToken token4 = signedEndorsingSupportingTokens[j];
SecurityKeyIdentifierClause clause3 = this.signedEndorsingTokenParameters[j].CreateKeyIdentifierClause(token4, this.GetTokenReferenceStyle(this.signedEndorsingTokenParameters[j]));
if (clause3 == null)
{
throw TraceUtility.ThrowHelperError(new MessageSecurityException(System.ServiceModel.SR.GetString("TokenManagerCannotCreateTokenReference")), base.Message);
}
if (this.signedEndorsingTokenParameters[j].RequireDerivedKeys && !this.signedEndorsingTokenParameters[j].HasAsymmetricKey)
{
string derivationAlgorithm = System.ServiceModel.Security.SecurityUtils.GetKeyDerivationAlgorithm(base.StandardsManager.MessageSecurityVersion.SecureConversationVersion);
DerivedKeySecurityToken token6 = new DerivedKeySecurityToken(-1, 0, base.AlgorithmSuite.GetSignatureKeyDerivationLength(token4, base.StandardsManager.MessageSecurityVersion.SecureConversationVersion), null, 0x10, token4, clause3, derivationAlgorithm, this.GenerateId());
token5 = token6;
clause4 = new LocalIdKeyIdentifierClause(token6.Id, token6.GetType());
this.elementContainer.AddSignedEndorsingDerivedSupportingToken(token6);
}
else
{
token5 = token4;
clause4 = clause3;
}
this.SignWithSupportingToken(token5, clause4);
}
}
}
Signature CreateSignature(XmlDocument doc, XmlElement body,
XmlNamespaceManager nsmgr,
SupportingTokenInfoCollection tokenInfos,
SecurityKeyIdentifierClause actualClause,
SymmetricAlgorithm actualKey,
SecurityToken signToken,
bool includeSigToken,
bool signatureProtection,
WSSecurityMessageHeader header,
Collection <WSSignedXml> endorsedSignatures,
ref string bodyId)
{
// sign
// see clause 8 of WS-SecurityPolicy C.2.2
WSSignedXml sxml = new WSSignedXml(doc);
SecurityTokenReferenceKeyInfo sigKeyInfo;
XmlElement secElem = null;
var sigSpec = SignaturePart;
var serializer = security.TokenSerializer;
var suite = security.Element.DefaultAlgorithmSuite;
var sig = sxml.Signature;
sig.SignedInfo.CanonicalizationMethod =
suite.DefaultCanonicalizationAlgorithm;
foreach (XmlElement elem in doc.SelectNodes("/s:Envelope/s:Header/o:Security/u:Timestamp", nsmgr))
{
CreateReference(sig, elem, elem.GetAttribute("Id", Constants.WsuNamespace));
}
foreach (XmlElement elem in doc.SelectNodes("/s:Envelope/s:Header/o:Security/o11:SignatureConfirmation", nsmgr))
{
CreateReference(sig, elem, elem.GetAttribute("Id", Constants.WsuNamespace));
}
foreach (SupportingTokenInfo tinfo in tokenInfos)
{
if (tinfo.Mode != SecurityTokenAttachmentMode.Endorsing)
{
XmlElement el = sxml.GetIdElement(doc, tinfo.Token.Id);
CreateReference(sig, el, el.GetAttribute("Id", Constants.WsuNamespace));
}
}
XmlNodeList nodes = doc.SelectNodes("/s:Envelope/s:Header/*", nsmgr);
for (int i = 0; i < msg.Headers.Count; i++)
{
MessageHeaderInfo h = msg.Headers [i];
if (h.Name == "Security" && h.Namespace == Constants.WssNamespace)
{
secElem = nodes [i] as XmlElement;
}
else if ((sigSpec.HeaderTypes.Count == 0 ||
sigSpec.HeaderTypes.Contains(new XmlQualifiedName(h.Name, h.Namespace))) &&
(msg.Version.Addressing != AddressingVersion.None ||
!String.Equals(h.Name, "Action", StringComparison.Ordinal)))
{
string id = GenerateId(doc);
h.Id = id;
CreateReference(sig, nodes [i] as XmlElement, id);
}
}
if (sigSpec.IsBodyIncluded)
{
bodyId = GenerateId(doc);
CreateReference(sig, body.ParentNode as XmlElement, bodyId);
}
if (security.DefaultSignatureAlgorithm == SignedXml.XmlDsigHMACSHA1Url)
{
// FIXME: use appropriate hash algorithm
sxml.ComputeSignature(new HMACSHA1(actualKey.Key));
sigKeyInfo = new SecurityTokenReferenceKeyInfo(actualClause, serializer, doc);
}
else
{
SecurityKeyIdentifierClause signClause =
CounterParameters.CallCreateKeyIdentifierClause(signToken, includeSigToken ? CounterParameters.ReferenceStyle : SecurityTokenReferenceStyle.External);
AsymmetricSecurityKey signKey = (AsymmetricSecurityKey)signToken.ResolveKeyIdentifierClause(signClause);
sxml.SigningKey = signKey.GetAsymmetricAlgorithm(security.DefaultSignatureAlgorithm, true);
sxml.ComputeSignature();
sigKeyInfo = new SecurityTokenReferenceKeyInfo(signClause, serializer, doc);
}
sxml.KeyInfo = new KeyInfo();
sxml.KeyInfo.AddClause(sigKeyInfo);
if (!signatureProtection)
{
header.AddContent(sig);
}
// endorse the signature with (signed)endorsing
// supporting tokens.
foreach (SupportingTokenInfo tinfo in tokenInfos)
{
switch (tinfo.Mode)
{
case SecurityTokenAttachmentMode.Endorsing:
case SecurityTokenAttachmentMode.SignedEndorsing:
if (sxml.Signature.Id == null)
{
sig.Id = GenerateId(doc);
secElem.AppendChild(sxml.GetXml());
}
WSSignedXml ssxml = new WSSignedXml(doc);
ssxml.Signature.SignedInfo.CanonicalizationMethod = suite.DefaultCanonicalizationAlgorithm;
CreateReference(ssxml.Signature, doc, sig.Id);
SecurityToken sst = tinfo.Token;
SecurityKey ssk = sst.SecurityKeys [0]; // FIXME: could be different?
SecurityKeyIdentifierClause tclause = new LocalIdKeyIdentifierClause(sst.Id); // FIXME: could be different?
if (ssk is SymmetricSecurityKey)
{
SymmetricSecurityKey signKey = (SymmetricSecurityKey)ssk;
ssxml.ComputeSignature(signKey.GetKeyedHashAlgorithm(suite.DefaultSymmetricSignatureAlgorithm));
}
else
{
AsymmetricSecurityKey signKey = (AsymmetricSecurityKey)ssk;
ssxml.SigningKey = signKey.GetAsymmetricAlgorithm(suite.DefaultAsymmetricSignatureAlgorithm, true);
ssxml.ComputeSignature();
}
ssxml.KeyInfo.AddClause(new SecurityTokenReferenceKeyInfo(tclause, serializer, doc));
if (!signatureProtection)
{
header.AddContent(ssxml.Signature);
}
endorsedSignatures.Add(ssxml);
break;
}
}
return(sig);
}
private async Task <bool> InvokeCryptographyEndpointAsync()
{
// Metadata requests must be made via GET.
// See http://openid.net/specs/openid-connect-discovery-1_0.html#ProviderConfigurationRequest
if (!string.Equals(Request.Method, "GET", StringComparison.OrdinalIgnoreCase))
{
Options.Logger.LogError("The discovery request was rejected because an invalid " +
"HTTP method was used: {Method}.", Request.Method);
return(await SendCryptographyResponseAsync(null, new OpenIdConnectMessage {
Error = OpenIdConnectConstants.Errors.InvalidRequest,
ErrorDescription = "Invalid HTTP method: make sure to use GET."
}));
}
var request = new OpenIdConnectMessage(Request.Query);
var context = new ValidateCryptographyRequestContext(Context, Options);
await Options.Provider.ValidateCryptographyRequest(context);
// Stop processing the request if Validated was not called.
if (!context.IsValidated)
{
Options.Logger.LogError("The discovery request was rejected with the following error: {Error} ; {Description}",
/* Error: */ context.Error ?? OpenIdConnectConstants.Errors.InvalidRequest,
/* Description: */ context.ErrorDescription);
return(await SendCryptographyResponseAsync(request, new OpenIdConnectMessage {
Error = context.Error ?? OpenIdConnectConstants.Errors.InvalidRequest,
ErrorDescription = context.ErrorDescription,
ErrorUri = context.ErrorUri
}));
}
var notification = new HandleCryptographyRequestContext(Context, Options, request);
foreach (var credentials in Options.EncryptingCredentials)
{
// Ignore the key if it's not supported.
if (!(credentials.SecurityKey is AsymmetricSecurityKey) ||
(!credentials.SecurityKey.IsSupportedAlgorithm(SecurityAlgorithms.RsaOaepKeyWrap) &&
!credentials.SecurityKey.IsSupportedAlgorithm(SecurityAlgorithms.RsaV15KeyWrap)))
{
Options.Logger.LogInformation("An unsupported encryption key was ignored and excluded " +
"from the key set: {Type}. Only asymmetric security keys " +
"supporting RSA1_5 or RSA-OAEP can be exposed via the JWKS " +
"endpoint.", credentials.SecurityKey.GetType().Name);
continue;
}
// Try to extract a key identifier from the credentials.
LocalIdKeyIdentifierClause identifier = null;
credentials.SecurityKeyIdentifier?.TryFind(out identifier);
// Resolve the underlying algorithm from the security key.
var algorithm = (RSA)((AsymmetricSecurityKey)credentials.SecurityKey)
.GetAsymmetricAlgorithm(
algorithm: SecurityAlgorithms.RsaOaepKeyWrap,
privateKey: false);
// Skip the key if a RSA instance cannot be retrieved.
if (algorithm == null)
{
Options.Logger.LogError("An encryption key was ignored because it was unable " +
"to provide the requested RSA instance.");
continue;
}
// Export the RSA public key to create a new JSON Web Key
// exposing the exponent and the modulus parameters.
var parameters = algorithm.ExportParameters(includePrivateParameters: false);
Debug.Assert(parameters.Exponent != null, "A null exponent was returned by RSA.ExportParameters()");
Debug.Assert(parameters.Modulus != null, "A null modulus was returned by RSA.ExportParameters()");
var key = new JsonWebKey {
Use = JsonWebKeyUseNames.Enc,
Kty = JsonWebAlgorithmsKeyTypes.RSA,
// Resolve the JWA identifier from the algorithm specified in the credentials.
Alg = OpenIdConnectServerHelpers.GetJwtAlgorithm(credentials.Algorithm),
// Use the key identifier specified
// in the signing credentials.
Kid = identifier.LocalId,
// Both E and N must be base64url-encoded.
// See http://tools.ietf.org/html/draft-ietf-jose-json-web-key-31#appendix-A.1
E = Base64UrlEncoder.Encode(parameters.Exponent),
N = Base64UrlEncoder.Encode(parameters.Modulus)
};
X509Certificate2 x509Certificate = null;
// Determine whether the encrypting credentials are directly based on a X.509 certificate.
var x509EncryptingCredentials = credentials as X509EncryptingCredentials;
if (x509EncryptingCredentials != null)
{
x509Certificate = x509EncryptingCredentials.Certificate;
}
// Skip looking for a X509SecurityKey in EncryptingCredentials.SecurityKey
// if a certificate has been found in the EncryptingCredentials instance.
if (x509Certificate == null)
{
// Determine whether the security key is an asymmetric key embedded in a X.509 certificate.
var x509SecurityKey = credentials.SecurityKey as X509SecurityKey;
if (x509SecurityKey != null)
{
x509Certificate = x509SecurityKey.Certificate;
}
}
// Skip looking for a X509AsymmetricSecurityKey in EncryptingCredentials.SecurityKey
// if a certificate has been found in EncryptingCredentials or EncryptingCredentials.SecurityKey.
if (x509Certificate == null)
{
// Determine whether the security key is an asymmetric key embedded in a X.509 certificate.
var x509AsymmetricSecurityKey = credentials.SecurityKey as X509AsymmetricSecurityKey;
if (x509AsymmetricSecurityKey != null)
{
// The X.509 certificate is not directly accessible when using X509AsymmetricSecurityKey.
// Reflection is the only way to get the certificate used to create the security key.
var field = typeof(X509AsymmetricSecurityKey).GetField(
name: "certificate",
bindingAttr: BindingFlags.Instance | BindingFlags.NonPublic);
Debug.Assert(field != null);
x509Certificate = (X509Certificate2)field.GetValue(x509AsymmetricSecurityKey);
}
}
// If the encryption key is embedded in a X.509 certificate, set
// the x5t and x5c parameters using the certificate details.
if (x509Certificate != null)
{
// x5t must be base64url-encoded.
// See http://tools.ietf.org/html/draft-ietf-jose-json-web-key-31#section-4.8
key.X5t = Base64UrlEncoder.Encode(x509Certificate.GetCertHash());
// Unlike E or N, the certificates contained in x5c
// must be base64-encoded and not base64url-encoded.
// See http://tools.ietf.org/html/draft-ietf-jose-json-web-key-31#section-4.7
key.X5c.Add(Convert.ToBase64String(x509Certificate.RawData));
}
notification.Keys.Add(key);
}
foreach (var credentials in Options.SigningCredentials)
{
// Ignore the key if it's not supported.
if (!(credentials.SigningKey is AsymmetricSecurityKey) ||
!credentials.SigningKey.IsSupportedAlgorithm(SecurityAlgorithms.RsaSha256Signature))
{
Options.Logger.LogInformation("An unsupported signing key was ignored and excluded " +
"from the key set: {Type}. Only asymmetric security keys " +
"supporting RS256, RS384 or RS512 can be exposed " +
"via the JWKS endpoint.", credentials.SigningKey.GetType().Name);
continue;
}
// Try to extract a key identifier from the credentials.
LocalIdKeyIdentifierClause identifier = null;
credentials.SigningKeyIdentifier?.TryFind(out identifier);
// Resolve the underlying algorithm from the security key.
var algorithm = (RSA)((AsymmetricSecurityKey)credentials.SigningKey)
.GetAsymmetricAlgorithm(
algorithm: SecurityAlgorithms.RsaOaepKeyWrap,
privateKey: false);
// Skip the key if a RSA instance cannot be retrieved.
if (algorithm == null)
{
Options.Logger.LogError("A signing key was ignored because it was unable " +
"to provide the requested RSA instance.");
continue;
}
// Export the RSA public key to create a new JSON Web Key
// exposing the exponent and the modulus parameters.
var parameters = algorithm.ExportParameters(includePrivateParameters: false);
Debug.Assert(parameters.Exponent != null, "A null exponent was returned by RSA.ExportParameters()");
Debug.Assert(parameters.Modulus != null, "A null modulus was returned by RSA.ExportParameters()");
var key = new JsonWebKey {
Use = JsonWebKeyUseNames.Sig,
Kty = JsonWebAlgorithmsKeyTypes.RSA,
// Resolve the JWA identifier from the algorithm specified in the credentials.
Alg = OpenIdConnectServerHelpers.GetJwtAlgorithm(credentials.SignatureAlgorithm),
// Use the key identifier specified
// in the signing credentials.
Kid = identifier?.LocalId,
// Both E and N must be base64url-encoded.
// See http://tools.ietf.org/html/draft-ietf-jose-json-web-key-31#appendix-A.1
E = Base64UrlEncoder.Encode(parameters.Exponent),
N = Base64UrlEncoder.Encode(parameters.Modulus)
};
X509Certificate2 x509Certificate = null;
// Determine whether the signing credentials are directly based on a X.509 certificate.
var x509SigningCredentials = credentials as X509SigningCredentials;
if (x509SigningCredentials != null)
{
x509Certificate = x509SigningCredentials.Certificate;
}
// Skip looking for a X509SecurityKey in SigningCredentials.SigningKey
// if a certificate has been found in the SigningCredentials instance.
if (x509Certificate == null)
{
// Determine whether the security key is an asymmetric key embedded in a X.509 certificate.
var x509SecurityKey = credentials.SigningKey as X509SecurityKey;
if (x509SecurityKey != null)
{
x509Certificate = x509SecurityKey.Certificate;
}
}
// Skip looking for a X509AsymmetricSecurityKey in SigningCredentials.SigningKey
// if a certificate has been found in SigningCredentials or SigningCredentials.SigningKey.
if (x509Certificate == null)
{
// Determine whether the security key is an asymmetric key embedded in a X.509 certificate.
var x509AsymmetricSecurityKey = credentials.SigningKey as X509AsymmetricSecurityKey;
if (x509AsymmetricSecurityKey != null)
{
// The X.509 certificate is not directly accessible when using X509AsymmetricSecurityKey.
// Reflection is the only way to get the certificate used to create the security key.
var field = typeof(X509AsymmetricSecurityKey).GetField(
name: "certificate",
bindingAttr: BindingFlags.Instance | BindingFlags.NonPublic);
Debug.Assert(field != null);
x509Certificate = (X509Certificate2)field.GetValue(x509AsymmetricSecurityKey);
}
}
// If the signing key is embedded in a X.509 certificate, set
// the x5t and x5c parameters using the certificate details.
if (x509Certificate != null)
{
// x5t must be base64url-encoded.
// See http://tools.ietf.org/html/draft-ietf-jose-json-web-key-31#section-4.8
key.X5t = Base64UrlEncoder.Encode(x509Certificate.GetCertHash());
// Unlike E or N, the certificates contained in x5c
// must be base64-encoded and not base64url-encoded.
// See http://tools.ietf.org/html/draft-ietf-jose-json-web-key-31#section-4.7
key.X5c.Add(Convert.ToBase64String(x509Certificate.RawData));
}
notification.Keys.Add(key);
}
await Options.Provider.HandleCryptographyRequest(notification);
if (notification.HandledResponse)
{
return(true);
}
else if (notification.Skipped)
{
return(false);
}
var response = new JObject();
var keys = new JArray();
foreach (var key in notification.Keys)
{
var item = new JObject();
// Ensure a key type has been provided.
// See http://tools.ietf.org/html/draft-ietf-jose-json-web-key-31#section-4.1
if (string.IsNullOrEmpty(key.Kty))
{
Options.Logger.LogError("A JSON Web Key was excluded from the key set because " +
"it didn't contain the mandatory 'kid' parameter.");
continue;
}
// Create a dictionary associating the
// JsonWebKey components with their values.
var parameters = new Dictionary <string, string> {
{ JsonWebKeyParameterNames.Kid, key.Kid },
{ JsonWebKeyParameterNames.Use, key.Use },
{ JsonWebKeyParameterNames.Kty, key.Kty },
{ JsonWebKeyParameterNames.KeyOps, key.KeyOps },
{ JsonWebKeyParameterNames.Alg, key.Alg },
{ JsonWebKeyParameterNames.E, key.E },
{ JsonWebKeyParameterNames.N, key.N },
{ JsonWebKeyParameterNames.X5t, key.X5t },
{ JsonWebKeyParameterNames.X5u, key.X5u }
};
foreach (var parameter in parameters)
{
if (!string.IsNullOrEmpty(parameter.Value))
{
item.Add(parameter.Key, parameter.Value);
}
}
if (key.X5c.Count != 0)
{
item.Add(JsonWebKeyParameterNames.X5c, JArray.FromObject(key.X5c));
}
keys.Add(item);
}
response.Add(JsonWebKeyParameterNames.Keys, keys);
return(await SendCryptographyResponseAsync(request, response));
}
